The countless renditions of its opening theme, as well as the uplifting heroic battle theme from the first game, "Roar! Imperial Floral Assault Troop".
Compared to the rest of the lyrics, the speech part is nothing but clichenote "We fight for justice. Even if we must risk our lives in that fight, we won't back down one step! That's the way of the Imperial Assault Force!" but the sheer bravado in the singer's delivery makes it sound badass.
The main theme of the fourth game is an awesome remix of the opening theme songs of the first and third games, giving the song this finale feeling.
Despite the fourth game being rushed because of the Dreamcast being on its deathbed, Kimi yo Hana yo still proves to be an emotional and uplifting credits theme.
The ending theme of the Ecole de Paris OVA, Au Revoir, My Tears, is also really good, once again highlighting Noriko Hidaka's singing skills.
Coquelicot's image song is ridiculously catchy. If you don't hear "Aruko! Aruko! Aruko!" even after you're done listening to it, then you have ears of steel.
Gemini's image song, My Dream, has a wild western feeling to it that fits Gemini perfectly.
Sagitta/Cherion's image song, Downtown Heart, just makes you wanna shout, "PRAISE THE LORD FOR MAKING THIS GAME! HALLELUJAH!"
Rikaritta/Rosita's image song, Bounty Hunter Rika, has a fiesta feeling to it.
Diana's image song, Looking to the Blue Sky, initially sounds sad and hopeless, but then turns into something bright and optimistic, symbolizing her character development in her chapter.
Sakura Amamiya's image song, I am a Maiden, is overflowing with heart and determination. It also counts as heartwarming as the song is about her feelings for Kamiyama.